You can Find your company information which is provided when your comapany signed up with salesforce .
To Find Your Company Information, Go To Setup-->Search company Information In quick Search box.
From Company Information page,You can:-
• You can Edit Your Company Information.
• can view user license, permission set licenses, and usage-based entitlements that your organization has access to.
• You can Add or remove licenses.
For Detailed Information ,Click here

Fiscal year:- A Fiscal year is a period used by governments for accounting and budget purposes which vary between countries. Fiscal year is also termed as Finance year or budget year.

You may customize your fiscal year in salesforce which comes under organization setup.
For Detailed information about fiscal year,Click here

Business hour:-Business hours are the hours during the day in which business is commonly conducted. Typical business hours vary widely by country

Business hours are set in salesforce to Specify the hours when your support team is available to serve customers. This helps make your department’s processes, such as escalations and milestones, more accurate.
For Detailed information about Business hour,click here

User Setup

In Salesforce, each user has Profile which defines User Roles.Each user is uniquely identified with a username, password and profile.
Profile Determines which tasks a user can perform, what data the user can see, and what the user can do with the data.
An Administrator can perform Following Tasks:-

User Interface includes the basic layouts provided by salesforce like Home Screen, Headers, Homepage, list view and components.
Homepage and home page components:-Home page components helps to customize the home tab in Salesforce classic .you can customize your home tab by including the components. You may edit the standard component such as message alerts, sidebar links by click on Edit or you may create new custom component by click on new. You can find home page components under Setup at Customize -> Home -> Home Page Components.
For Detailed Information Click herelist view :-List View is a specific set of contacts, documents, or other object records. For Example you want to have a list of account whose website should not be empty so you can make a custom list view for these types of requirnment. List view helps you to filter your records so you can quickly access the records from that list view.
For Detailed Information Click here